EP1888956A1 - Solenoid valve assembly for a combustible gas supply device to an endothermic engine - Google Patents

Solenoid valve assembly for a combustible gas supply device to an endothermic engine

Info

Publication number
EP1888956A1
EP1888956A1 EP06755261A EP06755261A EP1888956A1 EP 1888956 A1 EP1888956 A1 EP 1888956A1 EP 06755261 A EP06755261 A EP 06755261A EP 06755261 A EP06755261 A EP 06755261A EP 1888956 A1 EP1888956 A1 EP 1888956A1
Authority
EP
European Patent Office
Prior art keywords
solenoid valve
valve assembly
plate
assembly according
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06755261A
Other languages
German (de)
French (fr)
Other versions
EP1888956B1 (en
Inventor
Mario Gaiardo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matrix SpA
Original Assignee
Matrix SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35735337&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1888956(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Matrix SpA filed Critical Matrix SpA
Priority to PL06755261T priority Critical patent/PL1888956T3/en
Publication of EP1888956A1 publication Critical patent/EP1888956A1/en
Application granted granted Critical
Publication of EP1888956B1 publication Critical patent/EP1888956B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/0272—Ball valves; Plate valves; Valves having deformable or flexible parts, e.g. membranes; Rotatable valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0251—Details of actuators therefor
    • F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0682—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with an articulated or pivot armature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the present invention relates to a solenoid valve assembly for a combustible gas supply device to an endothermic engine, comprising at least one solenoid valve adapted to be controlled to send the combustible gas to a corresponding engine cylinder.
  • solenoid valves present some functional limits. Firstly, the position of the contact line on the anchor may vary due to the machining and assembly tolerance of the parts. Furthermore, the presence of the solenoid valve closing spring makes the operation of the latter relatively slow. Finally, the manufacturing of the solenoid valve is relatively costly, and the assembly and maintenance are particularly complicated.
  • a solenoid valve assembly for a combustible gas supply device, comprising a solenoid valve having a shutter carried by a plate turnable about a contact line with a fixed element.
  • This contact line consists of an edge formed by a slanted plane portion on a face of the plate, which is held in closed position by a bar of elastic material acting at the slanted plane portion.
  • this object is achieved by a solenoid valve assembly for a combustible gas supply device to an endothermic engine, as defined by claim 1.
  • figure 1 is a prospective view of two solenoid valve assemblies according to two variants of the invention
  • figure 2 is a longitudinal section of a further variant of the solenoid valve assembly according to the invention
  • figure 3 is a partial section taken along line III-III in figure 2
  • figure 4 is a portion of the section in figure 3 on a magnified scale
  • figure 5 is a section taken along line V-V in figure 2
  • figures 6 and 7 are a view of two details of the solenoid valve assembly in figure 2
  • figure 8 is a section taken along line VIII-VIII of the solenoid valve assembly in figure 2
  • figure 9 is a partial longitudinal section of one of the variants of the solenoid valve assembly in figure 1
  • figure 10 is a partial longitudinal section of the other variant of the solenoid valve assembly in figure 1.
  • numeral 5 generically indicates a solenoid valve assembly according to two different variants of the invention, for a combustible gas supply device to an endothermic engine, for example an Otto cycle.
  • the combustible gas may be methane or LPG.
  • the assembly 5 is enclosed in a box 6 essentially shaped as a parallelepiped, which comprises a hollow body 7 (also see figure 2), on which an inlet union 8 is fastened in a known manner for a rigid or flexible gas inlet conduit, not shown in the drawings .
  • the box 6 also comprises a plate 9 for closing the hollow body 7, which supports every time a number of nozzles, or outlet unions 10, for as many rigid or flexible outlet conduits, also not shown. Each of these outlet conduits is connected in a known manner to a corresponding engine cylinder.
  • the plate 9 in one of the variants, the plate 9 carries only one outlet union 10, while in the other variant the plate 8 carries four outlet unions 10.
  • the plate 9 carries instead two outlet unions 10.
  • the outlet unions 10 are calibrated and interchangeable, and are gas-tightly removably fastened, for example screwed, onto corresponding threaded pipes 11 made on the plate 9.
  • the box 6 also comprises a spacer or intermediate plate 12 supporting a plurality of shutters 13 for as many solenoid valves 14.
  • Each solenoid valve 14 is associated to corresponding holes 28 of plate 12.
  • the holes 28 are reciprocally equal and parallel and present respective axes arranged on a longitudinal median plane P (also see figure 3) perpendicular to plate 12.
  • This plate is fastened to the hollow body 7 by means of screws 15, with interposition of a gasket 16.
  • the closing plate 9 is fastened to the intermediate plate 12 with interposition of gaskets 17, which will be better seen below, by means of other through screws 18, which are fastened in corresponding threaded holes of the hollow body 7.
  • each solenoid valve 14 comprises a control electromagnet 19 (figure 3 and 4) comprising a core 20 of magnetic material, and an electrical coil 21.
  • the core 20 presents a polar surface 22, and is fastened onto a bottom wall 23 of profile 24 (also see figure 7) also of magnetic material, which completes the magnetic circuit of the electromagnets 19.
  • the profile 24 is common to all cores 18 and is accommodated in a compartment 36 of the hollow body 7, in communication with the inlet union 8.
  • the profile 24 also presents a side wall 25 having a polar surface 26, flat and aligned with the polar surface 22 of the core 20.
  • a gap plate 55 (also see figure 6) comprises a strip 45 adapted to cover the surface 26 of the wall 25 and a series of appendixes 40 adapted to cover the polar surfaces 22 of the cores 20.
  • Each shutter 13 is in the form of an elastomeric material disc and is adapted to close the corresponding hole 28 of the intermediate plate 12.
  • Each shutter 13 is carried in a known manner by a corresponding anchor 27 of the respective electromagnet 19, which is formed by a plate 29 of magnetic material.
  • the plate 29 has an oblong shape and presents a face 31 consisting of a flat surface, from which the shutter 13 protrudes towards the hole 28.
  • the plate 29 is provided with a pair of lateral recesses 32 (figure 5) , which are adapted to engage two appendixes 33 carried by a rib 34 of the intermediate plate 12, whereby this plate 12 has the function of guiding the anchors 27.
  • the plate 29 is turnable about a contact line 36 arranged on a face 37 of the plate 29, opposite to face 31.
  • the contact line 36 through the strip 45 of gap 55, rests on the surface 26 of the side wall 25 of the profile 24.
  • the face 37 comprises a flat surface 38 parallel to that of the face 31, a slanted surface 39, and a strip 41 formed by a curved surface.
  • the strip 41 comprises the contact line 36 and is arranged between the two flat surfaces 38 and 39.
  • the dihedral angle between the two surfaces 38 and 39 is smaller than 20°.
  • the intermediate plate 12 comprises a helical compression spring 44, which by means of a rigid compensation plate 50, acts on a bar 46 of relatively elastic material common to all anchors 27.
  • the intermediate plate 12 is provided with a corresponding sleeve 47 (also see figure 4) , engaging a corresponding compartment 48 of the closing plate 9, against whose bottom the spring 44 abuts.
  • the intermediate plate 23 presents a circular groove 51, in which is accommodated a corresponding gas tight gasket 52.
  • the printed circuit 35 is connected by means of a wiring formed by electrical wires 49 having a single connection with the outside.
  • the wires 49 supply electrical power to the electromagnets 19 and are enclosed in a single sheath 59 inserted in an aperture 60 of the hollow body 7.
  • the bar 46 presents a section having a circular portion engaging the portion 42 and a flat portion engaging the compensation plate 50.
  • the bar 46 consists of a fluoridated elastomer, having a permanently non alterable reticular structure in a temperature range from -4O 0 C to +18O 0 C. Therefore, the bar 46 ensures in such temperature range a friction reduction between an elastic element 43 and the plate 29, thus extending the life of the solenoid valve 14.
  • the gap 55 presents a reduced thickness, for example from 0.015mm to 0.15mm.
  • each fin 40 of the gap 55 (also see figure 6) is provided with a hole 53.
  • each plate 29 is provided with a hole 54.
  • the coil 21 is sized so as to absorb, during the maintenance step, a power from 1.3 to 1.5 watts.
  • the coil 21 may be sized so as to absorb a maintenance current of 0.6 amperes and an equivalent power of 1.44 watts.
  • the solenoid valve 14 presents an opening and closing time of the shutter 13 lower than 0.6 ms, with a fluctuation of such times lower than the measurable threshold.
  • the maximum injection frequency is higher than 160 hertz, with an average life of the solenoid valve 14 in the order of 500 million operating cycles .
  • the repeatability of the operation of assembly 5 of solenoid valves 14 results constant in a range of temperatures from -40° to +120°.
  • the closing plate 9 is fitted in easily removable manner and is of the modular type, i.e. provided with a different number of conduits 11.
  • the intermediate plate 12 is provided with a set of grooves, indicated as a whole by 56 and adapted to accommodate corresponding gas-tight gaskets 17, for allowing the connection to different closing plates 9.
  • each output union 10 can receive the supplied combustible gas, through one or two holes 28 of the closing plate 9, operating one or both the respective solenoid valves 14.
  • the connection of the closing plate 9 on the intermediate plate 12 is made using two gaskets 17, each of which is arranged in a groove 56/2 (figure 8) , which surrounds the outlet of two holes 28 of the intermediate plate 12.
  • FIG. 9 which shows a section of one of the variants in figure 1, it is shown a closing plate 9 provided with a single conduit 11 for a corresponding outlet union 10.
  • the single conduit 11 is in communication with an intermediate chamber 58, adapted to receive the combustible gas. This is supplied, through a number of holes 28 variable from one to four, operating the corresponding solenoid valves 14.
  • the connection of the closing plate 9 on the intermediate plate 12 is performed with the use of gasket 17, arranged in a groove 56/1 (figure 8) which surrounds the outlet of the four holes 28 of the intermediate plate 12.
  • the holes 28 in communication with one same outlet union 10 can be controlled selectively, i.e. individually or in combination, so as to modularly vary the flow rate of combustible gas to be supplied to the respective engine cylinder. Furthermore, the holes 28 in communication with a predetermined outlet union 10 can be variably controlled during the supply step of a cylinder, so as to modulate the combustible gas supply according to a predetermined diagram.
  • each hole 28 supplies a corresponding outlet union 10 under the control of the respective solenoid valve 14.
  • the connection of the closing plate 9 on the intermediate plate 12 is performed with the use of four gaskets 17, each of which is arranged in a groove 56/4 (figure 8) which surrounds the outlet of a corresponding hole 28 of the intermediate plate 12.
  • the conduits 11 are reciprocally coplanar.
  • the conduits 11 have an outwardly diverging shape, whereby the ends of the unions 10 themselves are more distanced. It is therefore clear that with the variants of figures 2, 9 and 10 of the assembly 5 of solenoid valves 14, it is possible to obtain flow rates of gas towards each engine cylinder from 905 Nl/min (standard litres per minute) at the pressure of 1 bar in the case of figure 10, to a maximum of 365 Nl/min in the case of figure 9.
  • the same assembly 5 of solenoid valves 14 may be used in different applications requiring the gas supply through a different number of output unions 10. Furthermore, it is optimised the production, storage and management of solenoid valve assemblies 5, specifically for OEM production.
  • the assembly 5 of solenoid valves 14 is of reduced dimensions and weight, whereby allowing more freedom of accommodation in the engine compartment of a motor vehicle.
  • the assembly 5 has a higher reliability, the number of active components being essentially halved, i.e. the number of electromagnets 19 and the respective anchors 27.
  • the response time of the electromagnets 19 is also reduced thanks to the sizing of the gap 55 and of the coil 21. Thanks to the increased compatibility of solenoid valves 14 of the oily fluids associated to LPG gas, the response time is constant at temperatures from -4O 0 C and +12O 0 C. Finally, thanks to the modular plates 9 it is obtained a high application flexibility for flows up to 365 Nl/min at a pressure of 1 bar.
  • the holes 28 of the plate 12 may be differently arranged, while in the variant of figure 10, the conduits 11 may be reciprocally parallel and coherently arranged with the holes 28 of the plate 12.
  • both the bar 46 and the compensation plate 50 may be divided into individual segments for each anchor 27.
  • the plate 50 may also be provided with narrowing sections to reduce the influence of the shift of an anchor 27 on the adjacent anchors 27.
  • both the dimensions and the shape of the box 6 may be changed.
  • the closing plate 9 may have a shape such to allow to obtain a tapered intermediate chamber 58 so as to guarantee that the lamellar flow of gas from the conduits 28 is conveyed to the inlet of the single conduit 11 with minimum loss of load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Magnetically Actuated Valves (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Multiple-Way Valves (AREA)

Abstract

The solenoid valve assembly (5) presents an inlet union (8), at least one combustible gas outlet hole (28), and a plate (29) carrying a shutter (13) and operatable by an electromagnet (19) for controlling the solenoid valve (14). The plate (29) is turnable about a contact line (36) of one face (37) engaged by a bar (46) pushed against the plate (29) by a helical compression spring (44), so as to normally keep the shutter (13) in closed position. A valve body (7) is connected to an intermediate plate (12) carrying the outlet holes (28) and is closed by a removable and modular closing plate (9), which carries a variable number of outlet conduits (11). The intermediate plate (12) is provided with a series of grooves (56) adapted to accommodate a series of different gaskets (17), each corresponding to a module of the closing plate (9).

Description

SOLENOID VALVE ASSEMBLY FOR A COMBUSTIBLE GAS SUPPLY DEVICE TO AN ENDOTHERMIC ENGINE
TECHNICAL FIELD The present invention relates to a solenoid valve assembly for a combustible gas supply device to an endothermic engine, comprising at least one solenoid valve adapted to be controlled to send the combustible gas to a corresponding engine cylinder. BACKGROUND ART
There have been proposed different combustible gas supply systems to an engine. In a known system, the gas output by a reducer-vaporiser is sent to a distributor-metering unit connected to the intake conduits of the various cylinders, by means of respective conduits. The combustible gas is sent to the intake conduit of each cylinder, by means of a solenoid valve assembly, in which the shutter of each solenoid valve is carried by an anchor of an electromagnet, formed by an oblong plate turnable about a contact line with one edge of a fixed element. Such contact is ensured by a bar of elastic material acting on one end of the anchor, which is however held in closed position by a spring acting at the shutter.
These solenoid valves present some functional limits. Firstly, the position of the contact line on the anchor may vary due to the machining and assembly tolerance of the parts. Furthermore, the presence of the solenoid valve closing spring makes the operation of the latter relatively slow. Finally, the manufacturing of the solenoid valve is relatively costly, and the assembly and maintenance are particularly complicated.
It has also been proposed a solenoid valve assembly for a combustible gas supply device, comprising a solenoid valve having a shutter carried by a plate turnable about a contact line with a fixed element. This contact line consists of an edge formed by a slanted plane portion on a face of the plate, which is held in closed position by a bar of elastic material acting at the slanted plane portion. To extend the limits of the amount of gas to be supplied, for each cylinder of the engine are envisaged two selectively operable different solenoid valves .
This solenoid valve assembly, in the case of an oily fluid such as LPG type gas, presents the drawback that the oil becomes very viscous at low temperatures, for example at -4O0C, in consequence of which the gas supply becomes problematic. Furthermore, at low temperatures, also the elastic features of the returning bar are reduced, whereby the anchor is returned to closed position with great delay. The elastic bar provides in all cases a non constant force at various temperatures of use, for the detachment from the polar surface of the electromagnet core. Finally, the presence of two solenoid valves for each engine cylinder makes the device cumbersome and costly. DISCLOSURE OF INVENTION
It is the object of the invention to obtain a solenoid valve assembly for a combustible gas supply device, resulting in high reliability and low cost, eliminating the drawbacks of the solenoid valve assemblies of the known art.
According to the invention, this object is achieved by a solenoid valve assembly for a combustible gas supply device to an endothermic engine, as defined by claim 1. BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, it will now be described a preferred embodiment only by way of non-limitative example, and with reference to the accompanying drawings, in which: figure 1 is a prospective view of two solenoid valve assemblies according to two variants of the invention; figure 2 is a longitudinal section of a further variant of the solenoid valve assembly according to the invention; figure 3 is a partial section taken along line III-III in figure 2; figure 4 is a portion of the section in figure 3 on a magnified scale; figure 5 is a section taken along line V-V in figure 2; figures 6 and 7 are a view of two details of the solenoid valve assembly in figure 2; figure 8 is a section taken along line VIII-VIII of the solenoid valve assembly in figure 2; figure 9 is a partial longitudinal section of one of the variants of the solenoid valve assembly in figure 1; figure 10 is a partial longitudinal section of the other variant of the solenoid valve assembly in figure 1. BEST MODE FOR CARRYING OUT THE INVENTION
With reference to figure 1, numeral 5 generically indicates a solenoid valve assembly according to two different variants of the invention, for a combustible gas supply device to an endothermic engine, for example an Otto cycle. The combustible gas may be methane or LPG. The assembly 5 is enclosed in a box 6 essentially shaped as a parallelepiped, which comprises a hollow body 7 (also see figure 2), on which an inlet union 8 is fastened in a known manner for a rigid or flexible gas inlet conduit, not shown in the drawings .
The box 6 also comprises a plate 9 for closing the hollow body 7, which supports every time a number of nozzles, or outlet unions 10, for as many rigid or flexible outlet conduits, also not shown. Each of these outlet conduits is connected in a known manner to a corresponding engine cylinder. In figure 1, in one of the variants, the plate 9 carries only one outlet union 10, while in the other variant the plate 8 carries four outlet unions 10. In figure 2, the plate 9 carries instead two outlet unions 10. In any case, the outlet unions 10 are calibrated and interchangeable, and are gas-tightly removably fastened, for example screwed, onto corresponding threaded pipes 11 made on the plate 9.
The box 6 also comprises a spacer or intermediate plate 12 supporting a plurality of shutters 13 for as many solenoid valves 14. Each solenoid valve 14 is associated to corresponding holes 28 of plate 12. The holes 28 are reciprocally equal and parallel and present respective axes arranged on a longitudinal median plane P (also see figure 3) perpendicular to plate 12. This plate is fastened to the hollow body 7 by means of screws 15, with interposition of a gasket 16. In turn, the closing plate 9 is fastened to the intermediate plate 12 with interposition of gaskets 17, which will be better seen below, by means of other through screws 18, which are fastened in corresponding threaded holes of the hollow body 7.
In particular, each solenoid valve 14 comprises a control electromagnet 19 (figure 3 and 4) comprising a core 20 of magnetic material, and an electrical coil 21. The core 20 presents a polar surface 22, and is fastened onto a bottom wall 23 of profile 24 (also see figure 7) also of magnetic material, which completes the magnetic circuit of the electromagnets 19. The profile 24 is common to all cores 18 and is accommodated in a compartment 36 of the hollow body 7, in communication with the inlet union 8. The profile 24 also presents a side wall 25 having a polar surface 26, flat and aligned with the polar surface 22 of the core 20. A gap plate 55 (also see figure 6) comprises a strip 45 adapted to cover the surface 26 of the wall 25 and a series of appendixes 40 adapted to cover the polar surfaces 22 of the cores 20.
Each shutter 13 is in the form of an elastomeric material disc and is adapted to close the corresponding hole 28 of the intermediate plate 12. Each shutter 13 is carried in a known manner by a corresponding anchor 27 of the respective electromagnet 19, which is formed by a plate 29 of magnetic material. The plate 29 has an oblong shape and presents a face 31 consisting of a flat surface, from which the shutter 13 protrudes towards the hole 28. The plate 29 is provided with a pair of lateral recesses 32 (figure 5) , which are adapted to engage two appendixes 33 carried by a rib 34 of the intermediate plate 12, whereby this plate 12 has the function of guiding the anchors 27. To the wall 25
(figure 3) of the profile 24 is anchored the usual printed control circuit 35 of the solenoid valves 14, which is therefore accommodated in the compartment 36 of the hollow body 7.
The plate 29 is turnable about a contact line 36 arranged on a face 37 of the plate 29, opposite to face 31. The contact line 36, through the strip 45 of gap 55, rests on the surface 26 of the side wall 25 of the profile 24. The face 37 comprises a flat surface 38 parallel to that of the face 31, a slanted surface 39, and a strip 41 formed by a curved surface. The strip 41 comprises the contact line 36 and is arranged between the two flat surfaces 38 and 39. Preferably, the dihedral angle between the two surfaces 38 and 39 is smaller than 20°. On a portion
42 of the face 31, opposite to the slanted surface 39 of the face 37, acts an elastic element, generally indicated by 43, which is adapted to normally keep the shutter 13 in closed position of the hole 28 of the intermediate plate 12.
According to the invention, the elastic element
43 comprises a helical compression spring 44, which by means of a rigid compensation plate 50, acts on a bar 46 of relatively elastic material common to all anchors 27. In particular, to accommodate each spring 44, the intermediate plate 12 is provided with a corresponding sleeve 47 (also see figure 4) , engaging a corresponding compartment 48 of the closing plate 9, against whose bottom the spring 44 abuts. At each sleeve 47, the intermediate plate 23 presents a circular groove 51, in which is accommodated a corresponding gas tight gasket 52. Furthermore, the printed circuit 35 is connected by means of a wiring formed by electrical wires 49 having a single connection with the outside. In particular, the wires 49 supply electrical power to the electromagnets 19 and are enclosed in a single sheath 59 inserted in an aperture 60 of the hollow body 7.
Advantageously, the bar 46 presents a section having a circular portion engaging the portion 42 and a flat portion engaging the compensation plate 50. The bar 46 consists of a fluoridated elastomer, having a permanently non alterable reticular structure in a temperature range from -4O0C to +18O0C. Therefore, the bar 46 ensures in such temperature range a friction reduction between an elastic element 43 and the plate 29, thus extending the life of the solenoid valve 14.
Preferably, the gap 55 presents a reduced thickness, for example from 0.015mm to 0.15mm. For the purpose of increasing drainage of oily fluids contained in LPG combustible gas, each fin 40 of the gap 55 (also see figure 6) is provided with a hole 53. For the same reason, each plate 29 is provided with a hole 54. In turn, the coil 21 is sized so as to absorb, during the maintenance step, a power from 1.3 to 1.5 watts. Advantageously, the coil 21 may be sized so as to absorb a maintenance current of 0.6 amperes and an equivalent power of 1.44 watts.
From performed experiments it results that the solenoid valve 14 according to the invention presents an opening and closing time of the shutter 13 lower than 0.6 ms, with a fluctuation of such times lower than the measurable threshold. The maximum injection frequency is higher than 160 hertz, with an average life of the solenoid valve 14 in the order of 500 million operating cycles . In normal conditions of use, the repeatability of the operation of assembly 5 of solenoid valves 14 results constant in a range of temperatures from -40° to +120°.
According to another aspect of the invention, the closing plate 9 is fitted in easily removable manner and is of the modular type, i.e. provided with a different number of conduits 11. For this purpose, the intermediate plate 12 is provided with a set of grooves, indicated as a whole by 56 and adapted to accommodate corresponding gas-tight gaskets 17, for allowing the connection to different closing plates 9.
In figure 2 it is shown a plate 9 provided with two conduits 11, each of which ends with an intermediate chamber formed by a flared portion 57 of the conduit 11, so as to be in communication with two holes 28 of the intermediate plate 12. In this manner, each output union 10 can receive the supplied combustible gas, through one or two holes 28 of the closing plate 9, operating one or both the respective solenoid valves 14. The connection of the closing plate 9 on the intermediate plate 12 is made using two gaskets 17, each of which is arranged in a groove 56/2 (figure 8) , which surrounds the outlet of two holes 28 of the intermediate plate 12.
In the variant of figure 9 which shows a section of one of the variants in figure 1, it is shown a closing plate 9 provided with a single conduit 11 for a corresponding outlet union 10. The single conduit 11 is in communication with an intermediate chamber 58, adapted to receive the combustible gas. This is supplied, through a number of holes 28 variable from one to four, operating the corresponding solenoid valves 14. The connection of the closing plate 9 on the intermediate plate 12 is performed with the use of gasket 17, arranged in a groove 56/1 (figure 8) which surrounds the outlet of the four holes 28 of the intermediate plate 12.
In the variants of figure 2 and figure 9, the holes 28 in communication with one same outlet union 10 can be controlled selectively, i.e. individually or in combination, so as to modularly vary the flow rate of combustible gas to be supplied to the respective engine cylinder. Furthermore, the holes 28 in communication with a predetermined outlet union 10 can be variably controlled during the supply step of a cylinder, so as to modulate the combustible gas supply according to a predetermined diagram.
In the variant of figure 10 which represents a section of the other variant of figure 1, it is shown a closing plate 9, equipped with four conduits 11 for as many outlet unions 10. Therefore, each hole 28 supplies a corresponding outlet union 10 under the control of the respective solenoid valve 14. The connection of the closing plate 9 on the intermediate plate 12 is performed with the use of four gaskets 17, each of which is arranged in a groove 56/4 (figure 8) which surrounds the outlet of a corresponding hole 28 of the intermediate plate 12.
As shown in figure 10, preferably the conduits 11 are reciprocally coplanar. For the purpose of facilitating access to the outlet unions 10, and therefore the respective connection with the respective connection conduits to the engine cylinders, the conduits 11 have an outwardly diverging shape, whereby the ends of the unions 10 themselves are more distanced. It is therefore clear that with the variants of figures 2, 9 and 10 of the assembly 5 of solenoid valves 14, it is possible to obtain flow rates of gas towards each engine cylinder from 905 Nl/min (standard litres per minute) at the pressure of 1 bar in the case of figure 10, to a maximum of 365 Nl/min in the case of figure 9. Furthermore, by replacing the single closing plate 9, the same assembly 5 of solenoid valves 14 may be used in different applications requiring the gas supply through a different number of output unions 10. Furthermore, it is optimised the production, storage and management of solenoid valve assemblies 5, specifically for OEM production.
From the above it is apparent the various other advantages of the assembly 5 of solenoid valves 14 according to the invention with respect to the known art. In particular, the assembly 5 of solenoid valves 14 is of reduced dimensions and weight, whereby allowing more freedom of accommodation in the engine compartment of a motor vehicle. Furthermore, such assembly 5 has a higher reliability, the number of active components being essentially halved, i.e. the number of electromagnets 19 and the respective anchors 27. The response time of the electromagnets 19 is also reduced thanks to the sizing of the gap 55 and of the coil 21. Thanks to the increased compatibility of solenoid valves 14 of the oily fluids associated to LPG gas, the response time is constant at temperatures from -4O0C and +12O0C. Finally, thanks to the modular plates 9 it is obtained a high application flexibility for flows up to 365 Nl/min at a pressure of 1 bar.
It is understood that various modifications and improvements may be made to the solenoid valve assembly without departing from the scope of the claims. For example, the holes 28 of the plate 12 may be differently arranged, while in the variant of figure 10, the conduits 11 may be reciprocally parallel and coherently arranged with the holes 28 of the plate 12. Furthermore, both the bar 46 and the compensation plate 50 may be divided into individual segments for each anchor 27. The plate 50 may also be provided with narrowing sections to reduce the influence of the shift of an anchor 27 on the adjacent anchors 27. Finally, both the dimensions and the shape of the box 6 may be changed. For example, in figure 9 the closing plate 9 may have a shape such to allow to obtain a tapered intermediate chamber 58 so as to guarantee that the lamellar flow of gas from the conduits 28 is conveyed to the inlet of the single conduit 11 with minimum loss of load.

Claims

1. A solenoid valve assembly for a combustible gas supply device to an endothermic engine, comprising at least one solenoid valve (14) adapted to being controlled to send combustible gas to the engine, said solenoid valve (14) comprising at least one outlet hole (28) of the combustible gas, one anchor (27) carrying a shutter (13) being operatable by an electromagnet (19) for controlling said outlet hole (28), said anchor (27) being formed by an oblong plate (29) turnable about a contact line (35) with a flat surface (26) of a fixed element (25, 55) , said contact line (36) being arranged on a first face (37) of said plate (29) between a first flat surface (38) and a slanted surface (39) with respect to said first flat surface (38), an elastic element (43) acting on said plate (29) with a force so as to normally keep said shutter (13) in a closed position of said solenoid valve (14); characterised in that said elastic element (43) comprises a curved section bar (46) pushed against said plate (29) by a helical compression spring (44).
2. A solenoid valve assembly according to claim 1, characterised in that said bar (46) is formed by an elastomer with a section at least partially circular, a compensation plate (50) being arranged between said bar (46) and one end of said helical spring (44) .
3. A solenoid valve assembly according to claim
1 or 2, characterised in that said fixed element (25,
55) is formed by a gap (55) of a portion (25) of the magnetic circuit of said electromagnet (19) .
4. A solenoid valve assembly according to claim
3, characterised in that it comprises one or more outlet unions (10) , in communication with the number of holes (28) through an intermediate chamber (57, 58, 11) , each of said outlet holes (28) being controlled by a corresponding electromagnet (19) .
5. A solenoid valve assembly according to claim
4, characterised in that each cylinder of said engine is supplied only by a corresponding outlet conduit (11) in communication with a corresponding outlet union (10) .
6. A solenoid valve assembly according to claim
5, characterised in that the holes (28) in communication with a predetermined outlet union (10) are selectively controlled to vary the flow rate of the gas to be modularly supplied to the respective engine cylinder.
7. A solenoid valve assembly according to claim 5 or 6, characterised in that the holes (28) in communication with a predetermined outlet union (10) are variably controlled during the supply step of an engine cylinder, so as to modulate the gas supply in time according to a predetermined diagram.
8. A solenoid valve assembly according to one of the claims from 4 to 7, characterised in that it comprises a hollow body (7) closed by a closing plate (9) carrying said outlet conduits (11) .
9. A solenoid valve assembly according to claim 8, characterised in that between said hollow body (7) and said closing plate (9) there is arranged an intermediate plate (12) provided with said holes (28) and adapted to carry said anchors (27) .
10. A solenoid valve assembly according to one of the claims from 3 to 9, characterised in that said gap (55) is integral with a plurality of fins (40) each in engagement with a core (20) of a corresponding electromagnetic (19) , each of said fins (40) being provided with at least one hole (53) adapted to facilitate the draining of oily components of the combustible gas .
11. A solenoid valve assembly according to one of the claims from 3 to 10, characterised in that each of said plates (29) is provided with at least one corresponding hole (54) adapted to facilitate the drainage of oily components of the combustible gas .
12. A solenoid valve assembly according to claim 8 and to one of the claims from 9 to 11, characterised in that said closing plate (9) is of a modular type with a variable number of outlet conduits (11) , said closing plate (9) being removably fitted on said intermediate plate (12) .
13. A solenoid valve assembly according to claim 12, characterised in that said intermediate plate (12) is provided with a series of grooves (56) adapted to accommodate a series of different gaskets (17), each corresponding to a module of said closing plate (9) .
14. A solenoid valve assembly according to claim 12 or 13, characterised in that at least one of said modules is provided with a series of said reciprocally coplanar and parallel outlet conduits (11) .
15. A solenoid valve assembly according to claim 12 or 14, characterised in that at least one of said modules is provided with a series of said reciprocally coplanar and divergent outlet conduits (11) .
16. A solenoid valve assembly according to claim 9 and to one of the claims from 10 to 15, characterised in that said electromagnets (19) are controlled by a printed circuit (35) accommodated inside said hollow body (7) and a wiring having a single connection (49) with the outside.
EP06755261A 2005-05-20 2006-05-19 Solenoid valve assembly for a combustible gas supply device to an endothermic engine Active EP1888956B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06755261T PL1888956T3 (en) 2005-05-20 2006-05-19 Solenoid valve assembly for a combustible gas supply device to an endothermic engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000348A ITTO20050348A1 (en) 2005-05-20 2005-05-20 GROUP OF SOLENOID VALVES FOR A FUEL GAS SUPPLY DEVICE TO AN ENDOTHERMAL ENGINE
PCT/EP2006/062435 WO2006122975A1 (en) 2005-05-20 2006-05-19 Solenoid valve assembly for a combustible gas supply device to an endothermic engine

Publications (2)

Publication Number Publication Date
EP1888956A1 true EP1888956A1 (en) 2008-02-20
EP1888956B1 EP1888956B1 (en) 2009-12-02

Family

ID=35735337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06755261A Active EP1888956B1 (en) 2005-05-20 2006-05-19 Solenoid valve assembly for a combustible gas supply device to an endothermic engine

Country Status (12)

Country Link
US (1) US7857283B2 (en)
EP (1) EP1888956B1 (en)
JP (1) JP2008540927A (en)
KR (1) KR101263352B1 (en)
CN (1) CN101189464B (en)
AR (1) AR053293A1 (en)
AT (1) ATE450739T1 (en)
BR (1) BRPI0610868A2 (en)
DE (1) DE602006010854D1 (en)
IT (1) ITTO20050348A1 (en)
PL (1) PL1888956T3 (en)
WO (1) WO2006122975A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL379784A1 (en) 2006-05-25 2007-11-26 D. T. Gas System D. Tomaszewska Spółka Jawna Device for quick and precise dosing of gas, especially for dosing of fuel to combustion engines
ITTO20060856A1 (en) * 2006-12-01 2008-06-02 Matrix Spa PLANT FOR GAS FUEL SUPPLY TO AN ENDOTHERMAL ENGINE AND ITS ELECTRO-INJECTOR
DE102010064121A1 (en) * 2010-12-23 2012-06-28 Robert Bosch Gmbh fuel feeder
ITTO20120619A1 (en) * 2012-07-12 2014-01-13 Matrix Spa BLOWING DEVICE FOR A PNEUMATIC PRODUCT SELECTION EQUIPMENT
DE102015104799B4 (en) 2015-03-27 2016-10-20 Mesa Parts GmbH Valve arrangement, use of a valve assembly, modular system for constructing valve assemblies
DE102016105532A1 (en) * 2016-03-24 2017-09-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Tilting tank valve and method of making the same
US10724768B2 (en) * 2016-05-25 2020-07-28 The University Of Chicago Systems and methods for providing continuous cooling at cryogenic temperatures
CN106090332A (en) * 2016-08-15 2016-11-09 合肥中安智能视觉科技有限公司 A kind of multi-way high-frequency electromagnetic drives air valve
DE102016125950A1 (en) * 2016-12-30 2018-07-05 Eto Magnetic Gmbh Electromagnetic hinged armature valve device
CN106931193B (en) * 2017-05-12 2023-03-24 林兵磊 Gas management valve group
CN107830227A (en) * 2017-11-30 2018-03-23 杨东红 The multigroup pneumatic high-frequency electromagnetic valve of integral type and its method of work
EP3885613B1 (en) * 2020-03-23 2023-07-26 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Edge-sealed tilting anchor for a vehicle magnetic valve
DE102021133233A1 (en) 2021-12-15 2023-06-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Bearing device for bearing an armature body of an electromagnetic switching or valve device and electromagnetic switching or valve device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948874A1 (en) * 1979-12-05 1981-06-11 Robert Bosch Gmbh, 7000 Stuttgart ELECTROMAGNETICALLY ACTUABLE VALVE
US4610425A (en) * 1984-05-24 1986-09-09 Robertshaw Controls Company Fuel control valve construction, parts therefor and methods of making the same
US4561631A (en) * 1984-06-08 1985-12-31 Lectron Products, Inc. Turbo boost valve
GB2206675B (en) * 1987-07-03 1991-07-24 Teves Gmbh Alfred Electromagnetically-actuatable three-way /two position directional control valve.
DE3739048C2 (en) * 1987-11-17 2001-08-09 Buerkert Gmbh Multi-way valve
US4905962A (en) * 1988-09-15 1990-03-06 Kaiser Aerospace & Electronics Corp. Fast-acting electromagnetic solenoid valve
CN2040154U (en) * 1988-12-05 1989-06-28 四川石油管理局南充机械厂 Gas adjuster for an automobile engine using natural gas
EP0400504B1 (en) * 1989-06-02 1994-08-10 MATRIX S.r.l. A high-speed solenoid valve for a fluid under pressure,e.g. for pneumatic circuits
US5139226A (en) * 1990-06-29 1992-08-18 Mechanical Systems Analysis, Inc. Electro-mechanical fluid control valve
IT1241327B (en) * 1990-11-30 1994-01-10 Matrix Srl HIGH SPEED THREE-WAY SOLENOID VALVE FOR A PRESSURIZED FLUID, FOR EXAMPLE FOR COMPRESSED AIR CIRCUITS
US5163623A (en) * 1991-05-31 1992-11-17 General Motors Corporation Fuel injector
DE4405657A1 (en) * 1994-02-22 1995-08-24 Buerkert Werke Gmbh & Co magnetic valve
DE4425540C2 (en) * 1994-07-19 2003-05-22 Buerkert Werke Gmbh & Co Modular valve for flowing media
DE19958913A1 (en) * 1999-12-07 2001-06-28 Bosch Gmbh Robert Electromagnetically actuated valve
DE10034033A1 (en) * 2000-07-13 2002-01-24 Nass Magnet Gmbh magnetic valve
ITTO20010566A1 (en) * 2001-06-12 2002-12-12 Matrix Spa COMBUSTIBLE GAS SUPPLY DEVICE FOR AN ENDOTHERMAL ENGINE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006122975A1 *

Also Published As

Publication number Publication date
PL1888956T3 (en) 2010-06-30
KR101263352B1 (en) 2013-05-16
WO2006122975A1 (en) 2006-11-23
EP1888956B1 (en) 2009-12-02
CN101189464A (en) 2008-05-28
US20080308051A1 (en) 2008-12-18
JP2008540927A (en) 2008-11-20
BRPI0610868A2 (en) 2009-08-04
ITTO20050348A1 (en) 2006-11-21
CN101189464B (en) 2010-05-19
KR20080045660A (en) 2008-05-23
AR053293A1 (en) 2007-04-25
ATE450739T1 (en) 2009-12-15
US7857283B2 (en) 2010-12-28
DE602006010854D1 (en) 2010-01-14

Similar Documents

Publication Publication Date Title
EP1888956B1 (en) Solenoid valve assembly for a combustible gas supply device to an endothermic engine
US8474418B2 (en) Partition member for cooling passage of internal combustion engine, cooling structure of internal combustion engine, and method for forming the cooling structure
TWI398588B (en) Balanced solenoid valve
JP3737128B2 (en) Fuel injection valve for high pressure injection
KR101755672B1 (en) Gas supply apparatus
US20100089347A1 (en) Dual variable valve solenoid module
US6830067B2 (en) Manifold valve
US20090194060A1 (en) Method for producing a support plate for valve bodies and a support plate
JP3780886B2 (en) Valve drive device for internal combustion engine
EP3204678B1 (en) Low power solenoid actuated valve
CN111128523A (en) Oil level control system of oil-immersed transformer
US20140345731A1 (en) Bistable fluid valve
US20210381616A1 (en) Solenoid valve device for a pressure-compensated solenoid valve, pressure-compensated solenoid valve, solenoid valve system, and method using the solenoid valve device
EP1267065B1 (en) Internal combustion engine fuel gas feed device
KR20080112302A (en) Power saving locking coil
CN114467368A (en) Cooling system and cooling device
CN102003551B (en) Diesel engine temperature adjusting valve
EP0918178B1 (en) Fluid flow control valve assembly
CN218761493U (en) Switch valve and valve core component thereof
CN219166189U (en) Material conveying valve, material conveying device and cooking equipment
SU1229499A1 (en) Solenoid valve
CN109228894B (en) Integrated block for new energy automobile
JP4070275B2 (en) Flash type pressure regulating valve mechanism
KR20070109703A (en) Improved structure for assembling a solenoid valve in auto transmission
CN114542967A (en) High-pressure cylinder valve and sealing valve

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20071220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: BA YU

RAX Requested extension states of the european patent have changed

Extension state: YU

Payment date: 20071220

Extension state: BA

Payment date: 20071220

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: BA YU

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602006010854

Country of ref document: DE

Date of ref document: 20100114

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100402

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100302

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100313

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100402

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

26N No opposition filed

Effective date: 20100903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100519

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100519

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100603

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150508

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20170508

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170731

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006010854

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180519

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230418

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20230421

Year of fee payment: 18